[PATCH 3/5] commit.c: parse 'prior' link

[Sam Vilain <sam.vilain@catalyst.net.nz>]

From: Sam Vilain <sam.vilain@catalyst.net.nz>

Parse for the 'prior' link in a commit
---

 commit.c |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/commit.c b/commit.c
index 2717dd8..e4bc396 100644
--- a/commit.c
+++ b/commit.c
@@ -260,6 +260,18 @@ int parse_commit_buffer(struct commit *i
 			n_refs++;
 		}
 	}
+	if (!memcmp(bufptr, "prior ", 6)) {
+		unsigned char prior[20];
+		if (get_sha1_hex(bufptr + 6, prior) || bufptr[46] != '\n')
+			return error("bad prior in commit %s", sha1_to_hex(item->object.sha1));
+		bufptr += 47;
+
+		item->prior = xmalloc(21);
+		strncpy(item->prior, (char*)&prior, 20);
+		item->prior[20] = '\0';
+	} else {
+		item->prior = 0;
+	}
 	if (graft) {
 		int i;
 		struct commit *new_parent;